public static function consume()

in src/inlines/AutoLinkExtension.php [32:88]
50 lines of code
11 McCabe index (conditional complexity)

  public static function consume(
    Context $_,
    string $markdown,
    int $offset,
  ): ?(Inline, int) {
    if (
      $offset > 0
      && !C\contains_key(self::MUST_FOLLOW, $markdown[$offset - 1])
    ) {
      return null;
    }

    $string = Str\slice($markdown, $offset);

    $matches = darray[];
    $result = \preg_match_with_matches(
      '/^(?<prefix>'.self::PREFIX.')(?<domain>'.self::DOMAIN.')/i',
      $string,
      inout $matches,
    );
    if ($result !== 1) {
      return null;
    }

    $full = $matches[0];
    $offset += Str\length($full);
    $prefix = $matches['prefix'];
    $domain = $matches['domain'];

    $next = $offset < Str\length($markdown) ? $markdown[$offset] : null;
    if ($next === '-' || $next === '_') {
      return null;
    }

    if (Str\lowercase($prefix) === 'www.') {
      list($path, $offset) = self::consumePath($markdown, $offset);
      $text = $prefix.$domain.$path;
      return tuple(
        new self($text, 'http://'.$text),
        $offset,
      );
    }
    if (Str\ends_with($prefix, '://')) {
      list($path, $offset) = self::consumePath($markdown, $offset);
      $text = $prefix.$domain.$path;
      return tuple(
        new self($text, $text),
        $offset,
      );
    }

    // email
    return tuple(
      new self($full, 'mailto:'.$full),
      $offset,
    );
  }